Blood in the urine: causes, diagnosis and when you should act

Blood in the urine—whether visible to the naked eye or detectable only through laboratory testing—is a symptom that should always be taken seriously and evaluated by a urologist. It may indicate conditions affecting the bladder, kidneys, or urinary tract.

Visible and invisible blood

There are two forms:

• Macrohematuria: Blood is visible in the urine to the naked eye—the urine appears reddish or brownish in color.
• Microhematuria: Traces of blood are detectable only via a urine dipstick test or under a microscope.

Special Caution with Painless Bleeding

If blood is visible in the urine and you experience no pain (painless macrohematuria), this may indicate a serious condition such as a bladder tumor. Prompt urological evaluation is particularly important in this case.

Increased Risk for Smokers

Smokers are particularly at risk: The toxins from cigarette smoke are excreted through the kidneys and accumulate in the urine. Over a prolonged period, these harmful substances can damage the bladder lining and increase the risk of bladder cancer.

How Is the Cause Determined?

The UROMED Center of Excellence in Urology offers modern diagnostic procedures:

Ultrasound examination

A painless examination that allows for imaging of the kidneys, ureters, and bladder. Stones, tissue changes, or masses can often be detected quickly this way.

Cystoscopy

During a cystoscopy, a very thin instrument with a camera is painlessly inserted into the bladder. This allows the bladder lining to be directly inspected and any changes to be detected.

Good news: Early detection means effective treatment

Even malignant tumors of the bladder—if detected in time—are generally treatable and often curable. Therefore, blood in the urine should always be investigated, even if it may have harmless causes, such as after intense physical exertion.

Do not hesitate to make an appointment with your urologist to rule out kidney stones or cancer with certainty.